Demountable rim.



F. R. BARKER.

. DBMOUNTABLE RIM.

APPLICATION FILED AUG. 1Q, 1910.

Patented 0ct.3, 1911'I ffl' DEMQUNTAELE Specification of Letters rafcent.

remmen oem eg reir;

flb all whom ii may concern:

Be it known bat l, FREDERIC R. Brennen n snbjeci, of King George V of England, re'- sidingr si, l'osion, 1n ille county of Suiollr a fin-" 'leie Massachusetts, have invented new end useful lmproveinens in Demounlable Rims of which ille following is a specilicniion. This in'veniion reloies to in'iprovements in demonn'mble rilns 'for vehicle Wheels end is of that class used perticnlerly in connection with pneumatic tires.

fin the use of devices of this class, il; is customary to carry e spore rim end' `tiro with the tire inflated on jdie riin ready for use and ii' a tire on tbe vehicle becomes ponctured or otherwise rendered unfit for use it is removed together with its rim and the spare rim and tire are substituted for it. This is supposed to eiect a saving in time and 'trouble as compared with the re movel of tbe punctured vire from the rim and substiinting a new inner 4tube Jfor the punctured one and replacing the tire on the rim, as before. However, demounteble rimsv es heretofore constructed have been provided with fastening devices whose nnture is such that it takes considerable time to remove the rim and tire and replace 'them by tbe spare rim and tire, and it is the obn ject of my invention to provide a demount able rim beving ineens for attaching the seme to the Wheel whereby the rim may be removed from the Wheel end replaced by another with great' rapidity and facility and to this end my invent-ion consists in the novel features of constrnctionand in .the

combination and arrangement of parts set fwo'rtb in the following specification and per ticule-rly pointed oui; 1n tbe claims.

Referring to the drawing: Figure l is a' side eieviition of e demonniebie rim ein bodying my invention showing the same in connection with e wheel .and tire, llle bob und part of lqspolres of the Wheel being partly broken away. Figa 2 1s en enlarged side eievetion of n portion of the Wlneel, rim and zireshowing the fastening device." Fig. 3 is e Sectional view teken on line SW3 of Fig. looking toward the right. Fig. liis e sectional view 'teken on line Llrfl of Fig. Q, .looliingin thedirection of the arrows on reid line.

like numerals refer to like parts'llirougbour ille several views of obo drawing.

In the drawing, 5 is n lire which .may 4be or any usuel or desired construction secured"v to :i1-im (i111 any usual or desired mnner as, forexamp'le,- by ineens of beads 7 and 8.

The rimf is mounied on e wheel 9 in any.`

usuel or desired manner and \vl1ich in ibis instance, comprises a felly 10 having on its periphery a ring il securedtbereio in any desired manner.- To this ring the rim 6 is securedvbv radially movable means engagging `ili'e rim and consistingoi' an' linien rnpied ring .l2 which is (,fircunrferentially expansible and, conirectible is prei'- erably elasiic and iends io dir 'nisb in diemeer when released. The ring l1 is prei erebly provided with e circninereniial groove 13 which receives be ring seid groove being of' sndicl'ent depli io allow the ring 1Q to expend-end contract radially sind circumferenigially tliereinro o considerable extent.

'The ring l2 moy engage tbe rire o in any suitable manner 'io prcvenl' said rini from beingr laterally'. displaced on tbe ring 1l and 'for ibis piirnose the ring 1l provided on one side with en annuler lei? While on tbe other side is locrbed ibs rin l2, and the rim 6 is provided ,db e. su projection or projeciions loeeed beiiveen said flange and seid ring 12 end interengeging `therewith so es to be normally prevented from becoming displaced leierelly. Preferably, tbe rim 6 and ring 11 are oleo pro vided with interenge'ging means for pre venting seid rim from rotating on said ring, such means preferably consisting of a series of lugs l5 projet:ting inwardly from the rim and located beiveen lugs 16 provided on tbe ring* 1l between theliange 14, end tbe ring l2, the projections 15 also serving;I io engage the inner faces of the flange ifi sind ring'lQ to prevent lateral. vdisplecernent of the rim 6.

The ring l2 is expended and contracted so as to be engaged Wit-b ind disengaged from the rim 6 by :my suireble ineens und for this'purpose nl preferably provide s pinion gear 17 meshing et diernetrlcellyi opposite points Wit-li LWorziclrs i8 and 19 rormed on or secured or otlrerwise connecle'd to the ring l2 and being preferably integre-l *tbe/ref with. To admit the -rack ,19.qv libe ring il 'is preferably providedfwith n `slot 2O of snit able extent formed by curling mvny the menl et ilie bojeoni oi' lidlgroove 'i3 ai the Ill 11 at each side of the groove 13, as shown ir.

l Figs. 3 and 4, said slots permitting said gear to move radially as the ring 12 expandsV and contracts radially. To this shaft, I connect suitable means for imparting rotation to the gear 17 thereby to move' the racks 18 and 19 oppositely in order to eX- pand and contract the ring 12 and for this purpose I preferably employ a lever 23 constituting a pawl carrier j'ournaled on the shaft 22 and having mounted thereon a double acting pawl 24 engaging a suitable ratchet 25-secured to the shaft 22, said pawl being held in engagement'witli one side or the other of said ratchet by means of a suitable spring r26. The lever 23 is preferably formed vconcentric with the rim and other circumferential parts of the wheel, as shown.

In order to expand or contract the ring. 12, the pawl 24 is set in the proper position,

in engagement with the ratchet 25 and the lever 23 is then swung in the proper direction to cause the gear 17 to be rotated, thus imparting a relative longitudinal movement to the racks 18 and 19. It will be evident that the ring 12 requires some means to normally loclrthe same against contraction so that the rim will be firmly locked in place and to this end, I provide any suitable means connected thereto and which, in the present instance, consists of a locking member 27 mounted upon a pivot 28 on the lever 23 and provided with an inwardly project ing lug 29 interengaging with a suitable lug 30 provided on the inner periphery of the ring 14, said member being preferably provided with an eye 31 normally extendinglongitudinally of the lever 23.

To free the projection 29 from the lug 30, the operator grasps the eye 3l, preferably by inserting his inger' through the same, and .swings the member 27 outwardly 'through an angle of 90, thus completely disengaging the projection 29 from the lug 30.4 The lever 23 may then be swung downwardly and toward the left to a suiicient extent to contract the ring 12 until its periphery is either below -or flush with the top of the groove 13, whereupon the rim 6 ma be removed by sliding the saine laterally toward the right, Fig. 3, carrying the tire with it. The rim and tire thus removed will ,then be replaced by. another identical therewith and secured 'in place by a reversal of the foregoing operation. When the ring 12 is thus .expanded it very forcibly engages the inner periphery of the rim 6 and not only prevents the same from becoming displacedlaterally, but prevents any rattling. l

Having thus described my invention, what I. claim' and desire by Letters Patent to secureis:

1. The combination with a wheel, of a rim, a gear, a pair of racks oppositely meshing with said gear, means operated by said racks forv securing said rim to said wheel, a ratchet connected to said gear, a pawl engaging said ratchet, a lever on which said pawl is mounted to move relative to said lever and bodily with respect to said ratchet, and means to normally lock said lever.

2. The combination with a wheel, of a rim, a gear having a shaft, a pair of racks oppositely meshing with said gear, means operated by said racks for securing said rim to said wheel, a ratchet secured to said shaft, a lever pivoted on said shaft, a pawl mounted on said lever and engaging said ratchet, and means to normally lock said lever.

3. The combination with a wheel, of a rim, a gear having a shaft, a pair of racks oppositely meshing with said gear, means operated by said racks for securing said rim to said wheel, a ratchet secured to said shaft, a lever pivoted on said shaft and having a pair of arms between which'saidratchet is located, a pawl mounted on said lever be- `tween said arms and engaging said ratchet,

and means to normally lock said lever.

In testimony whereofI have hereunto set my hand in presence of two subscribing witnesses.

FREDERIC R. BAKKER. Witnesses:

LoUis A. JONES, SYDNEY E. TAFT. 

